Windows 7 shuts down, but does not power off. ASUS P5B board to blame? Just installed Windows 7 RC1. I have a dual boot system with XP and Win7. I can't seem to shut down Windows 7. I tell it to shut down, it goes through all the shutdown processes happily, it blanks my monitor, but the disks whir down but the machine does not stop. Nothing actually powers down. I've tried messing around in the BIOS, uninstalling unnecessary stuff, but nothing seems to help. All I have on are my sound drivers (soundblaster X-Fi Elite Pro), graphics card (Nvidia 8800GTS), and Office 2007. I also have some Syncrosoft drivers installed for my audio dongle, too. Everything else has gone. Has anyone else had this problem? I should point out that WinXP works fine, and WinVista (which I've deleted and overwritten with Win7) never had any problems, I've taken off my antivirus software, too, but that hasn't helped.